HCAR2 and myeloid sarcoma: For example, DMF‐induced activation of the G protein‐coupled HCAR2, which is linked to immunomodulatory NF‐κB‐dependent signaling [14], is through MMF: HCAR2 is bound and activated by MMF, but not DMF [31], and was demonstrated to mediate therapeutic effects of DMF in a mouse model of MS [32].